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Two launches within 4 hours

China sent two experimental #satellites into preset orbit via a Long March-2C carrier rocket on Tuesday, space authorities said. The satellite will conduct internet convergence experiments.
Within 4 hours, China conducted a second space launch on Tue night. A Long March 3B carrier rocket successfully sent a communication technology experiment satellite from Xichang, SW China’s Sichuan Province.

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(BRICS) signed an agreement for cooperation in remote sensing satellite data sharing

https://www.thehindu.com/news/national/brics-signs-deal-on-cooperation-in-remote-sensing-satellite-data-sharing/article35992097.ece

Brazil, Russia, India, China and South Africa (BRICS) signed an agreement for cooperation in remote sensing satellite data sharing, according to Indian Space Research Organisation (ISRO).

The pact inked on August 17 enables building a virtual constellation of specified remote sensing satellites of BRICS space agencies and their respective ground stations will receive the data, ISRO said.

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JF-22 ultra-high-speed wind tunnel

https://www.thesun.co.uk/news/15120985/china-hypersonic-wind-tunnel/ the JF-22 tunnel was capable to simulating flights at Mach 30 or 23,000mph – 30 times the speed of sound.

China’s JF-22 ultra-high-speed wind tunnel is expected to be completed by 2022. It can reproduce flying conditions at an altitude of 40-100 kms at about 30 times the speed of sound. If successful, the cost of satellite and spacecraft launches will be 90% cheaper
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Tianhui-II-02 satellite atop Long March-4B

China clocked its 29th orbital launch for 2021. On August 18 (Eastern Time) China launched a Long March/Chang Zheng-4B from the Taiyuan Satellite Launch Center in Shanxi Province carrying the second group of Tianhui 2 satellites into orbit.
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800-kilovolt ultra-high voltage power line from Shaanxi to Hubei

An ultra-high voltage power line on Friday started to transmit direct current electricity from an energy base in northern Shaanxi to central China’s Hubei Province. The 800-kilovolt ultra-high voltage power lines starts from Yulin, a city of Shaanxi Province, and stretches 1,127 kilometers to Wuhan, capital of Hubei, passing provinces of Shanxi and Henan route. Its transmission capacity can reach eight million kilowatts. “The northern part of Shaanxi is rich in primary energy reserve such as crude, gas, coal, and salt. It is also a rich area of new energy such as wind power and photovoltaic resource. At present, the installed capacity of new energy in Shaanxi has exceeded 20 million kilowatts, and this project can unremittingly transmit the clean energy from the northern and western parts of Shaanxi to Hubei and other parts in central China,” said Zhao Yingbo, deputy director of State Grid Shaanxi Electric Power Company. The power line, connecting the northwest and central China, will play complementary role in resource allocation in a large scale, improve cross-province power distribution capacity, and meet the growing demand for electricity in central China. “Upon completion, the power line can transmit 40 billion kilowatt-hours of electricity to Hubei every year, which accounts for about 70 percent of Wuhan’s annual electricity consumption. It will ensure the smooth operation of Hubei’s power grid and more stable and reliable power supply,” said Peng Ying, deputy director of State Grid Hubei Ultra-high Voltage Power Line Office. To construct the ultra-high voltage power line, a new generation of ultra-high voltage power transmission technology have been applied for the first time, and domestically-developed equipments have also been widely applied. The power line also made a breakthrough on the 467-kilometers electricity transmission route without repeaters. So far, the State Grid has 14 ultra-high voltage power lines transmitting alternating current electricity and 13 ultra-high voltage power lines transmitting direct current. The power line under operation and construction measures 45,000 kilometers, generating over 480 million kilowatt of power and transmitting more than two trillion kilowatt of electricity.
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Zhongxing-2E satellite

China successfully sent the Zhongxing-2E satellite into space on a Long March-3B carrier rocket from Xichang Satellite Launch Center in southwest China’s Sichuan Province at 00:30 a.m. BJT Thursday.

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Two multimedia satellites with Long March-6 carrier rocket

China on Wednesday successfully sent two multimedia satellites into pre-set orbit from the Taiyuan Satellite Launch Center in north China’s Shanxi Province. The satellites were launched by a Long March-6 carrier rocket at 19:01 Beijing Time. The launch was the 382nd flight mission for the Long March series carrier rockets.